Portable device and motor mounted thereto via elastic member

Abstract

A portable device integrates a small dc motor. The mounting structure of the motor allows an easy installation of the motor and to lower an electric noise level substantially. An insulating first elastic member and a conductive second elastic member are disposed around outside of a motor frame. While leaf-spring type motor-terminals are conductive to feeding terminals of a device, the motor frame is shorted by the second elastic member to a grounding terminal of the device.

What is claimed is:  
     
       1. A device comprising: 
       a motor having a frame of which surface is conductive;  
       a grounding terminal disposed at a place facing the frame;  
       a housing for accommodating said motor; and  
       an elastic member made of conductive resin, including:  
       a first portion forming an electrical conductor disposed between said frame and said grounding terminal; and  
       a second portion disposed between said frame and said housing.  
     
     
       2. The device as defined in  claim 1  further comprising: 
       a board having said grounding terminal,  
       wherein said motor and said elastic member are sandwiched between said housing and said board.  
     
     
       3. The device as defined in  claim 2  further comprising a radio transceiver mounted to said board. 
     
     
       4. The device as defined in  claim 1 , wherein said elastic member is synthetic rubber. 
     
     
       5. The device as defined in  claim 1 , wherein the frame roughly shapes in a cup, and an opening of the cup is covered by said elastic member. 
     
     
       6. The device as defined in  claim 1 , wherein said motor includes an unbalance mechanism for generating a vibration due to rotating. 
     
     
       7. A device comprising: 
       (a) a motor having a frame of which surface is conductive and a motor terminal in a leaf spring shape;  
       (b) a feeding terminal for powering said motor and disposed at a place facing the motor terminal;  
       (c) a grounding terminal disposed at a place facing the frame;  
       (d) a first elastic member made of insulating resin and disposed for urging the motor terminal to said feeding terminal; and  
       (e) a second elastic member made of conductive resin and disposed between the frame and said grounding terminal.  
     
     
       8. The device as defined in  claim 7  further comprising: 
       a housing; and  
       a board having said feeding terminal and said grounding terminal,  
       wherein said motor, said first and said second elastic members are sandwiched between said housing and said board.  
     
     
       9. The device as defined in  claim 8  further comprising a radio transceiver mounted to said board. 
     
     
       10. The device as defined in  claim 7 , wherein said first and second elastic members are unitarily formed by two-color-molding method. 
     
     
       11. The device as defined in  claim 7 , wherein said first and said second elastic members are synthetic rubber. 
     
     
       12. The device as defined in  claim 7 , wherein the frame roughly shapes in a cup, and an opening of the cup is covered by said second elastic member. 
     
     
       13. The device as defined in  claim 7 , wherein said motor includes an unbalance mechanism for generating a vibration due to rotating. 
     
     
       14. A motor comprising: 
       a frame of which surface is conductive; and  
       a motor terminal in a leaf spring shape,  
       wherein said motor terminal is urged by a first elastic member made of insulating resin to a feeding terminal of a device, and said frame is conductive to a grounding terminal of the device via a second elastic member made of conductive resin.